Missing "Sign in as Different User" option in sharepoint 2013

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If you are using this menu option in previous versions of sharepoint, there is no link for "Sign in as Different User" anymore...

But there is 2 workarounds for having the same functionality;

1. Change the siteurl with yours and it will ask you for the new username and password

https://siteurl/_layouts/closeConnection.aspx?loginasanotheruser=true

2. Open internet explorer by  using "run as different user" option  (Shift+ right click) by entering the username and password that you like

 

Keep in mind first option may not work in some browsers and ie10